[steertrak335i]

dm2583 did they solve yout missfire problem ?

[dm2583]

Nope, its still with them! Over 2 weeks now and no solution. Apparently they're talking to BMW's technical department

[dm2583]

So an update on this, my car is STILL with BMW who still can't diagnose the issue. They're in dialogue with BMW UK's technical team who have so far asked the dealership to carry out a whole range of tests on the gearbox and fuel supply, change all injectors, change HPFP and today they're looking at the ports for carbon deposits which if present, they'll walnut blast out.

Starting to piss me right off now as it'll have been with them for 6 weeks on Thursday but not a lot I can do

[bizzleb109]

I had exactly the same problem replaced the plugs and coils still same issue ended up being the costly injectors. Good luck

[Chappers 71]

The worst of it is your car will have been parked up somewhere having nothing done with it for the majority of the time it's been with your dealer.

Last time mine went to main dealers they asked me to get it to them before 8am & they'd be in touch by 11am but they would need it for a whole day to run diagnostics for which I was paying £140.
I had left my dash cam in the car & after reviewing the footage my car wasn't even moved into a service bay until 2.30pm, where it sat for a further 45mins. It was then 'worked on 'for a total of 19 minutes.
My service advisor contacted me at 5.30pm to tell me I could pick up the car but they would need it for another 2 days to run further diagnostics at a cost of £280.

[Dormermike]

Worst part about the monthly mondial warranty is the required BMW dealer interactions. Up their own Aries.

[dm2583]

Originally Posted by Chappers 71

The worst of it is your car will have been parked up somewhere having nothing done with it for the majority of the time it's been with your dealer.

Last time mine went to main dealers they asked me to get it to them before 8am & they'd be in touch by 11am but they would need it for a whole day to run diagnostics for which I was paying £140.
I had left my dash cam in the car & after reviewing the footage my car wasn't even moved into a service bay until 2.30pm, where it sat for a further 45mins. It was then 'worked on 'for a total of 19 minutes.
My service advisor contacted me at 5.30pm to tell me I could pick up the car but they would need it for another 2 days to run further diagnostics at a cost of £280.

That is shocking!

My dash cam is wired up so be interesting to see what footage it saves.

[dm2583]

Originally Posted by bizzleb109

I had exactly the same problem replaced the plugs and coils still same issue ended up being the costly injectors. Good luck

Ive had all those changed in the last 6 weeks yet still the problem remains

[RajB]

Reminds me of the M5's time at Benhams. Took them weeks and lots of swapping parts before finally finding the issue. They used a donor M5 back then to trial bits off LOL.

Sorted my misfire on cylinder 3 with a spark plug change. Just fitted NGK's that are one step colder for better performance. Seems to have sorted it.

Would be interested to know if they've left the new parts on or removed them again (as I was told they do do that).

[dm2583]

Originally Posted by RajB

Reminds me of the M5's time at Benhams. Took them weeks and lots of swapping parts before finally finding the issue. They used a donor M5 back then to trial bits off LOL.

Sorted my misfire on cylinder 3 with a spark plug change. Just fitted NGK's that are one step colder for better performance. Seems to have sorted it.

Would be interested to know if they've left the new parts on or removed them again (as I was told they do do that).

I was wondering that too. I'll ask if/when i go and collect it.

[bizzleb109]

Originally Posted by dm2583

Ive had all those changed in the last 6 weeks yet still the problem remains

Could be vamps solenoids

[dm2583]

Originally Posted by bizzleb109

Could be vamps solenoids

I could tell them this but they won't listen as they only do what their computer tells them to. Old fashioned investigative work seems to have gone out the window with main dealers these days.


Further update, after removing the inlet manifold yesterday, the ports were heavily coked up so today they will be walnut blasting them and then testing the car.

On the bright side, I was planning to have the walnut blasting done myself at some point so this has saved me £300!